Category Archives: Fluid Dynamics

Persistant homology paper in Physica D

Our paper on the use of ideas from persistent homology for large non equilibrium fluid systems has been published in Physica D.  This is a large collaborative effort between my group at Virginia Tech, Mike Schatz’ group in the physics department at Georgia Tech, and Konstantin Mischaikow’s group in the match department at Rutgers University. The paper can be found here.


The image above is from a numerical simulation from my group of the spiral defect chaos state of Rayleigh-Benard convection in a large cylindrical domain. Color contours are shown of the temperature of the fluid where red is hot rising fluid and blue is cold falling fluid. The solid black line around the edges indicate the position of the lateral sidewalls of the convection domain.

Covariant Lyapunov vector paper in Physical Review E

Mu Xu is the lead author on the paper “Covariant Lyapunov vectors of chaotic Rayleigh-Benard convection” which has been published in Physical Review E. The paper can be found here.


Shown above is the spatial power spectrum of the covariant Lyapunov vectors for chaotic Rayleigh-Benard convection where q is the wavenumber and j is the index of the covariant Lyapunov vector. Color represent the magnitude of the power spectrum where red is large and blue in small.

Multiple Open Faculty Positions in the ME Department

The Mechanical Engineering Department has multiple open tenure-track faculty positions. The two areas of interest are Fluid-Thermal Science and Mechanical Systems. More details can be found in the following advertisement.

fall2013Photo is of the Holtzman Alumni center taken from a gallery of Fall 2013 images posted at


2013 Fall Fluid Mechanics Symposium is now accepting abstracts

The 2013 Fall Fluids Symposium at Virginia Tech:

I am a co-organizer of the annual Fall Fluids Symposium at Virginia Tech which is now in its sixth year! This year I am co-organizing the Fluids Symposium with Mark Stremler. This year’s event will be held at the Inn at Virginia Tech on November 21. More information about this year’s symposia, including abstract submission, can be found here.

We look forward to seeing many of you there.


The above image is from Sunghwan Jung’s lab in the Department of Engineering Science and Mechanics.

Paper on the Fluid-Coupled Dynamics of Elastic Objects now available at Physical Review E

Our paper on the fluid coupled dynamics of small elastic structures is now available from Physical Review E.  Here the are the paper details:

Paul, Clark, and Cross, Coupled motion of microscale and nanoscale elastic objects in a viscous fluid, Physical Review E, 88, 043012 (2013).